Page 38 - Section4.2.1-SWPPPCutSheet-FiltrexxStormWaterBlanket

Post-Construction | Section 2: Storm Water Management | 403

SWPPP Cut Sheet:

PURPOSE & DESCRIPTION

Filtrexx ® Severe slope stabilization is a system that allows for the stabilization of eroded or damaged slopes while creating attractive vegetated landscapes without the use of hard materials such as concrete and steel. Through the use of Filtrexx ® FilterSoxx TM , the Severe slope stabilization system provides superior soil retention and erosion protection while providing an optimum environment for vegetation establishment.

APPLICATION

Constructing Filtrexx ® Severe slope stabilization involves stacking Filtrexx ® FilterSoxx tm on top of one another in a recessed fashion on steep slopes to near vertical situations. When required, a variety of grades of geogrid are seamlessly incorporated into the system giving it added structural support and integrity to meet specifc environmental and site requirements. Although the central focus of the Severe slope stabilization system is to stabilize earth and reduce erosion, the secondary objective is to provide for the establishment and sustainability of vegetation and an aesthetic landscape feature. This goal is evidenced through the design and function of the wall fascia of Filtrexx ® FilterSoxx TM as well as the GrowingMedia TM that flls the wall fascia. The Filtrexx ® Severe slope stabilization can be used for a wide variety of non-structural applications including: • Steep Slope Stabilization • Streambank Stabilization • Pond bank stabilization • Slip Repairs • Culvert Headwalls • Bridge Abutments • Dikes/Berm • Flood Protection

INSTALLATION

Filtrexx ® Severe slope stabilization shall meet Filtrexx ® Severe slope stabilization Specifcations and use Filtrexx ® GrowingMedia tm . Contractor is required to be a Filtrexx ® Certifed tm Installer as determined by Filtrexx ® International, LLC (440-926-2607 or visit website at www.fltrexx.com). Certifcation shall be considered current if appropriate identifcation is shown during time of bid or at time of application (current list can be found at www.fltrexx.com). Look for the Filtrexx ® Certifed tm Installer Seal.

Site Preparation : Prior to construction of Severe slope stabilization, some preparation of the project area may be necessary. The project area must be clear of rock and debris that could prevent good ground contact or potentially damage the FilterSoxx TM.

During installation, care should be taken not to disturb excessive areas that will then need to be revegetated. In many cases, the FilterSoxx TM may be installed around existing vegetation and land features which will increase the integrity of the system. It is recommended that an experienced installer be consulted prior to working around questionable terrain .

Drainage : Unlike impermeable, hard-faced walls, a drainage zone behind the face of the Severe slope stabilization may not be required. This is because the FilterSoxx TM fascia is highly permeable. This permeability greatly reduces hydrostatic pressure and facilitates hydration of the GrowingMedia TM and fascia vegetation. Where increased drainage is desired or in high-fow areas, stone may be added in addition to the GrowingMedia TM in the frst and/or second FilterSoxx TM course to enhance the movement of

Section 2: Storm Water Management – Post-Construction

Filtrexx ® Severe Slope

Stabilization

Vegetated Slope Stabilization Technology